Continuity mistake: In the shot of Valerie, Alexandra, and Melody, Valerie's feet are coloured purple like her shoes.
Continuity mistake: Valerie wears purple shoes throughout the episode, but in one scene, she is wearing black shoes.
The New Scooby-Doo Movies (1972)
2 continuity mistakes in season 2
Starring: Don Messick, Casey Kasem, Nicole Jaffe
Continuity mistake: When Batman is talking to Scooby and the gang in the Batcave, in one shot he is missing his glove and is wearing a large ring, while in all other shots he had both gloves on.
Shaggy: Man, I don't know what's worse... Those Muck Men, or Cass Elliot's driving.
Scooby: Cass Elliot's driving!